Good dispersion of hydrophilic nanoscale silica in rubber matrix and the effects on rubber nanocomposites  

作　　者：WANG QingGuo XIE JingHui QIAO JinLiang ZHANG LiQun 

机构地区：[1]Key Laboratory of Rubber-plastics of Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China [2]SINOPEC Beijing Research Institute of Chemical Industry,Beijing 100013,China [2]SINOPEC Beijing Research Institute of Chemical Industry,Beijing 100013,China [3]Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Science China(Technological Sciences)》2012年第3期652-658,共7页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50873049);National High Technology Research and Development Program of China ("863" Program) (Grant No. 2009AA-03Z338);Shandong Young Scientists Encouragement Foundation (Grant No. 2007BS04038);the Scientific Research Foundation of Shandong Education Department (Grant No. J07YA12)

摘　　要：Using the industrial technologies of rubber latex irradiation,preparation of nanoscale silica(SiO2) slurry,mixing irradiated rubber latex with SiO2 slurry,and the spray drying,we have prepared the ultrafine fully-vulcanized powder carboxyl styrene-butadiene rubber(UFPCSBR)/SiO2 nanocompound powder,in which the SiO2 particles and UFPCSBR particles are isolated and stuck each other.When the UFPCSBR/SiO2 nanocompound powder is mixed with crude rubber,the UFPCSBR particles are dispersed well in rubber matrix because of their good compatibility,then the SiO2 particles are also dispersed well in rubber matrix because of the carrier nature of the UFPCSBR particles during the mixing procedure,and the novel rubber/UFPCSBR/SiO2 nanocomposites are fabricated.Compared with the rubber composites prepared by mixing the crude rubber with the UFPCSBR powder and SiO2 powder one after the other,the novel UFPCSBR/SiO2 nanocompound modified rubber/UFPCSBR/SiO2 nanocomposites have better abrasion resistance,higher tensile strength and tear strength,and lower heat build-up data.Noteworthily,the tanδ-temperature curve of the novel rubber/UFPCSBR/SiO2 nanocomposites has the second tanδ peak due to the newly generated boundary layer surrounding the SiO2 particles,increasing the tanδ values in the temperature range of 0-20℃,which is very important to the research of green tyre tread.

关 键 词：rubber nanocomposites ultraf＇me fully-vulcanized powder rubber hydrophilic nanoscale silica DISPERSION wet skid resistance 

分 类 号：TQ127.2[化学工程—无机化工] TB332[一般工业技术—材料科学与工程]